GRID DYNAMICS HLDGS INC

Ticker: GDYN CUSIP: 39813G109 Class: Common Stock

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025
Shares 31,409 Value ($000) $284 Avg Close $8.66 Range $7.40 - $10.21
Q3 2025
Shares 2,676 Value ($000) $0 Avg Close $8.93 Range $7.37 - $12.86
Q1 2025
Shares 13 Value ($000) $0 Avg Close $20.04 Range $15.23 - $25.50
Q4 2024
Shares 5,039 Value ($000) $0 Avg Close $17.46 Range $13.77 - $24.16
Q3 2024
Shares 315 Value ($000) $0 Avg Close $12.92 Range $10.15 - $14.67
Q2 2024
Shares 982 Value ($000) $0 Avg Close $10.31 Range $9.07 - $12.36
Q3 2023
Shares 4,925 Value ($000) $0 Avg Close $11.09 Range $9.00 - $12.39
Q2 2022
Shares 35 Value ($000) $0 Avg Close $16.34 Range $13.26 - $21.10
Q1 2022
Shares 4,374 Value ($000) $61 Avg Close $20.44 Range $9.09 - $39.67
Q4 2021
Shares 397 Value ($000) $15 Avg Close $34.56 Range $25.75 - $42.81
Q3 2021
Shares 1,580 Value ($000) $29 Avg Close $24.45 Range $15.29 - $32.69
Q2 2021
Shares 2,793 Value ($000) $41 Avg Close $15.67 Range $13.84 - $19.08
Q4 2020
Shares 172 Value ($000) $2 Avg Close $9.65 Range $7.61 - $12.94